Question: Who was the chairperson of the US Department of State in January of 2013?
Paraphrase: Who chaired the US Department of State in January of 2013?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q789915 p:P488 ?s . ?s ps:P488 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2013')) }